An Optimization Model for Plug-In Hybrid Electric Vehicles
- ORNL
The necessity for environmentally conscious vehicle designs in conjunction with increasing concerns regarding U.S. dependency on foreign oil and climate change have induced significant investment towards enhancing the propulsion portfolio with new technologies. More recently, plug-in hybrid electric vehicles (PHEVs) have held great intuitive appeal and have attracted considerable attention. PHEVs have the potential to reduce petroleum consumption and greenhouse gas (GHG) emissions in the commercial transportation sector. They are especially appealing in situations where daily commuting is within a small amount of miles with excessive stop-and-go driving. The research effort outlined in this paper aims to investigate the implications of motor/generator and battery size on fuel economy and GHG emissions in a medium-duty PHEV. An optimization framework is developed and applied to two different parallel powertrain configurations, e.g., pre-transmission and post-transmission, to derive the optimal design with respect to motor/generator and battery size. A comparison between the conventional and PHEV configurations with equivalent size and performance under the same driving conditions is conducted, thus allowing an assessment of the fuel economy and GHG emissions potential improvement. The post-transmission parallel configuration yields higher fuel economy and less GHG emissions compared to pre-transmission configuration partly attributable to the enhanced regenerative braking efficiency.
- Research Organization:
- Oak Ridge National Laboratory (ORNL); National Transportation Research Center
- Sponsoring Organization:
- EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1023309
- Country of Publication:
- United States
- Language:
- English
Similar Records
Well-to-wheels analysis of energy use and greenhouse gas emissions of plug-in hybrid electric vehicles.
Medium-duty Urban Range Extended Connected Powertrain (Final Scientific Technical Report)
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS
CONFIGURATION
DESIGN
EFFICIENCY
FUEL CONSUMPTION
GREENHOUSE GASES
HYBRID ELECTRIC-POWERED VEHICLES
INTERNAL COMBUSTION ENGINES
OPTIMIZATION
PERFORMANCE
PETROLEUM
PROPULSION
Plug-in hybrid electric vehicle
REGENERATIVE BRAKING
TRANSPORTATION SECTOR
design optimization
fuel economy
greenhouse gas emissions
hybrid-electric vehicle
post-transmission parallel configuration
pre-transmission parallel configuration
regression model